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Finding the Fourth Proportional to 8,770.20, 13,187.70 and 7,344.60

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Solution

The fourth proportional to 8,770.20, 13,187.70 and 7,344.60 is: 11,044.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,770.20 : 13,187.70 = 7,344.60 : x
  2. Step 2: Convert to fraction form
    8,770.20/13,187.70 = 7,344.60/x
  3. Step 3: Cross multiply
    8,770.20x = 13,187.70 × 7,344.60
  4. Step 4: Simplify right side
    8,770.20x = 96,858,381.42
  5. Step 5: Solve for x
    x = 96,858,381.42/8,770.20
  6. Step 6: Final answer
    x = 11,044.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.